Shareholders' Equity (Detail Textuals) (Share Repurchase Program)	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Oct. 31, 2008	Jan. 31, 2006
Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Number of shares authorized to be purchased				250,000
Remaining number of shares authorized to be purchased	204,471		200,000
Number of shares purchased under purchase program	245,529
Shares purchased during period	7,441	0